Envelop.



F. L. TOUPAL.

v ENVELOP. APPLICATION FILED APR. 2!. I916.

.- 1,212,852. Patented Jan. 16,1917.

WITNESSES F k LIILIENTOR A TTORII'EY? .ENVELOP.

Specification of Letters Patent.

Patented Jan. 16, 1917.

Xpplication filed April 27, 1916. Serial No. 93,900.

T 0 all whom. it may concern Be it known that I, FRANK L. ToUrAL, a citizen of the UnitedStates, and a resident of Chicago'Heights, in the county of Cook and State of Illinois, have invented a new and Improved Envelop, of which the following is a full, clear,and exact description.

My invention has for its object to provide an envelop havin an open end and two transverse slots a jacent thereto, so that a tongue extending from the flap at the open end may extend down through one slot and up through the other, for locking purposes.

Another object of the invention is to elongate the tongue, and provide the flap with a slot, thereby permitting the introduction of the end of the tongue in the slot in the fia when the tongue is bent rearwardly.

till another object of the invention is to increase the thickness of the tongue beyond the two slots in the body of the envelop,

thereby providing a shoulder for engaging the envelop at the said slots to assist in looking the flap.

Additional objects of the invention will appear in the following s ecific'ation in which the preferred form 0 the invention is described.

In the drawings, similar reference characters denote similar parts in all the views, in which Figure 1 is a view illustrating my envelop; Fig. 2 is a fragmentary view of the envelop illustrated in Fig. 1, but with the tongue bent over and with its end disposed in the slot in the flap; Fig. 3 is a sectional View on-the line 33 of Fig. 2; Fig. 4 is a sectional view on the line 4. 4: of Fig. 1; and Figs. 5, 6 and 7 are views illustrating modified forms of the invention.

By referring to the drawings, it will be seen that an envelop is provided having a body 10, the saidenvelop body 10 having an open end 11 which may be closed by a flap 12, in a manner well understood. This flap 12 is provided with a tongue 13 having sides- 14 and 15 which are bent one over the otherand which are secured together, thereby forming a shoulder 16, so that when the tongue 15 is disposed down he slot 17in the envelop body 10 and up in a slot18 in.

the said envelop body,.the tongue 15 at its shoulder 16 will engage the envelop body 10 at the slot 18 for locking purposes. The

tongue 15, after it is disposed up throu h the slot 18, is bent rearwardly so that Its end 19 may be disposed down in the slot 20 in the flap l2. 7

In the modified form of the invention illustrated in Fig. 5 of the drawings, a tongue 13 is not provided with a shoulder 16, the other features of the construction being the same asillustrated in Figs. 1, 2, 8

and 4: of the drawings.

Inv the modified form of the invention shown in Fig. 6 of the drawings, a tongue 13 instead of being integral with the flap 12 is glued thereto at 21, the other features of construction being the same as illustrated in Fig. 5 of the drawings. The form of the invention illustrated in Fig. 6 of the drawings may be used for purposes of economy, if desired.

In the form of the invention illustrated in Fig. 7 of the drawings, a tongue 13 is provided with a shoulder 16 formed by the edges 14 and 15 of the tongue 13, which are disposed over each other and which are secured thereto but in this form of the invention, the tongue 13 is not designed to be lfolent on'itself for disposal in a slot in the Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. An envelop having a body with an open end and with two slots spaced apart and adjacent the said open end, a flap extending from the body for inclosing the said open end and having a slot and a tongue extending from the flap the sides of the tongue at a distance from the flap having lateral extensions which are bent in the direction of each other and secured together, the tongue being normally disposed down through one slot and up through the other slot in the envelop body, with the inner edges of its bent side disposed substantially at one of the slots in the body, the tongue being then bent back and having its end extending into the slot in the flap.

2. An envelop having a body with an open end and with two slots spaced apart and adjacent the said open end, a flap extending from the envelop for inclosing the said open end and having an extending tongue, the sides of the tongue at a distance from the flap having lateral extensions which are bent in the direction of each other and secured together so that when the tongue is disposed down through one slot and up through the other, the inner edges of the bent sides of the tongue will be dis.- posed substantially at one of the slots in the body for the purpose specified.

3. An envelop having a body with an open end and with two slots spaced apart and adjacent the said open end, a flap extending from the envelop for inclosing the said open end and having a tongue norlnally extending down through one slot and up through the other slot, the tongue being provided With a shoulder spaced from the flap and disposed beyond the slots for engaging the'envelop at the slots for vlocking purposes.

4. An envelop having a body with an open end and with two slots spaced apart andad- Copies of this patent may be obtained for jaoent the said open end, a flap extending from the body for inclosing the said open end and having a slot, and a tongue extend- ;ing from the flap and normally disposed down through one slot and up through the other slotin the envelop body and then bent back and having its end extending into the slot in the flap, the tongue being provided Witnesses:-

JoHN J. BUNOE,' PAUL DELUDE.

five cents each, by addressing the Commissioner of Patents. Washington, Doc. 

